What are the chances of seeing a Straight-Lined Sulphur in Yasuní National Park?
With luck
About 10% of wildlife watchers report a Straight-Lined Sulphur sighting in Yasuní National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 140th most-seen of the 203 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
When is the best time to see a Straight-Lined Sulphur in Yasuní National Park?
February and October
In those months about 20% of wildlife watchers report a Straight-Lined Sulphur in Yasuní National Park on a given day, against under 5% in March–June, August–September and December–January, the lowest months.
What time of day is best to see a Straight-Lined Sulphur?
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Straight-Lined Sulphur sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Is Yasuní National Park the best place to see a Straight-Lined Sulphur?
Among the best
Of the 5 parks where we can rate Straight-Lined Sulphur sightings, Yasuní National Park ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Iguazú National Park (Argentina, about 10%) and Iguaçu National Park (Brazil, about 10%).
Which relatives of the Straight-Lined Sulphur live in Yasuní National Park?
Same family: Pieridae
The closest relatives of the Straight-Lined Sulphur that you can see in Yasuní National Park (family Pieridae, Whites, Yellows, and Sulphurs) are Florida White (about 10%), Cross-Barred White (about 10%) and Chiapas White (about 10%), with each one's daily chance of a sighting.
Where does the Straight-Lined Sulphur sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Straight-Lined Sulphur is recorded against all the insects logged in Yasuní National Park (8 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.